How do you wire driving lamps into the headlight switch on a mustang?

I want to wire the fog/driving lamps of my 2000 mustang into the headlights so i can have them on at the same time when i turn the headlight switch on. I really don't want to have a seperate switch for the fog lights.How do you wire driving lamps into the headlight switch on a mustang?Unless you like the smell of melting plastic and ozone, better leave it the way it is. Other people have tried it, and while I don't mind replacing harnesses for customer pay jobs, the customer's don't like paying for it out of their pockets. The headlamp circuit will fry if you hook the fog lamps in with it. I have seen it done before and it completely melted the harness from the lamps to the switch. Much easier to click a switch than to repair the damage.How do you wire driving lamps into the headlight switch on a mustang?Splice into the headlight wire, or unplug the light socket and slide the driving lamp wires into the socket and plug it back into the lights...How do you wire driving lamps into the headlight switch on a mustang?Use a relay. Where you would attach the switch wire run a wire from the lowbeam side of the headlight. Now when you turn on your head lights the fog lights will turn on, when you use your highbeams the foglight will turn off. This keeps everything legal.

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